白垩系巨厚砂岩下覆岩离层水涌突机理研究
Mechanism of Water Inrush in Overlying Strata of Cretaceous Thick Sandstone
-
摘要: 针对石拉乌素矿南翼首采221上106A综放开采工作面推进距离550 m时采空区覆岩离层积水异常涌突事件,通过现场实测和理论分析,对此次异常突水事件的机理进行深入研究。研究表明:工作面采动期间距开采煤层310 m的白垩系巨厚砂岩下形成的封闭离层积水是此次异常突水的水源;按照距106A工作面3.0 km的覆岩变形破坏光纤监测孔所确定的裂采比为24.56,计算得导水断裂带发育高度不会沟通白垩系巨厚砂岩下形成的封闭离层。但由于离层积水具有荷载传递作用,导致下部导水断裂带与离层之间的岩层发生破坏,形成下行裂隙,使得导水断裂带沟通积水离层,形成离层突水。Abstract: This paper aims at the water inrush event of roof bed separation in the goaf when the working face 106A in Shilawusu mine advances 550 m away. On the basis of field measurement and theoretical analysis, the mechanism of this water inrush event was deeply studied. The results show that the closed separation area water under the cretaceous giant sandstone 310 m away from the coal seam is the source of this abnormal water inrush event. According to the overburden deformation and failure fiber optic monitoring drilling 3.0 km away from the 106A working face, the ratio of the height of the fractured zone to the mining height is 24.56, the calculated water flowing fractured zone would not develop to the position of bed separation under cretaceous giant sandstone. However, the loading transfer effect of separation area water leads to the failure of the rock layer between the water flowing fractured zone and the bed separation, which makes the water flowing fractured zone connects separation area water, forms water-inrush event in roof bed separation.
-
Keywords:
- thick sandstone /
- bed separation /
- separation area water /
- loading transfer /
- water inrush
-
-
[1] 中华人民共和国2017年国民经济和社会发展统计公报[J].中国统计,2018(3):7-20. [2] 张鑫,乔伟,雷利剑,等.综放开采覆岩离层形成机理[J].煤炭学报,2016,41(S2):342-349. [3] 吕广罗,李文平,黄阳,等.综放开采煤层顶板离层积水涌突特征及防治关键技术研究[J].中国煤炭地质,2016(11):59-65. [4] Liu Y, Li W, He J, et al. Application of Brillouin optical time domain reflectometry to dynamic monitoring of overburden deformation and failure caused by underground mining[J]. International Journal of Rock Mechanics & Mining Sciences, 2018, 106: 133-143. [5] 孙学阳,付恒心,寇规规,等.综采工作面顶板次生离层水害形成机理分析[J].采矿与安全工程学报,2017,34(4):678-683. [6] GUI H R, LIN M L, Song X M. Identification and Application of Roof Bed Separation (Water) in Coal Mines[J]. Mine Water and the Environment, 2018, 37(2): 376-384. [7] 张文忠.离层水突水模式与离层破断距[J].湖南科技大学学报(自然科学版),2015(2):20-23. [8] Li W, Liu Y, Qiao W, et al. An Improved Vulnerability Assessment Model for Floor Water Bursting Fr[J]. Mine Water&the Environment, 2017(1): 1-9. [9] 国家煤矿安全监察局.煤矿防治水规定释义[M].徐州:中国矿业大学出版社,2009:250-252. [10] 乔伟,黄阳,袁中帮,等.巨厚煤层综放开采顶板离层水形成机制及防治方法研究[J].岩石力学与工程学报,2014,33(10):2076-2085. -
期刊类型引用(8)
1. 谢道雷，苗田雨，韩承豪，王凯，王厚臣，柴德洋，高洁. 西部矿区深埋厚煤层采动覆岩离层发育规律数值模拟研究. 煤矿安全. 2024(04): 204-212 . 
本站查看
2. 周金余. 矿区规划环评在协调地下水资源保护和矿区有序开发中的作用. 煤炭工程. 2024(07): 7-13 . 百度学术
3. 杜林，李江华，李耀斌，华可，孙维成，李鹏飞，张豪哲. 园子沟煤矿顶板离层突水机制及地面井下联合防治技术. 煤矿安全. 2024(11): 176-185 . 本站查看
4. 马荷雯. 我国煤矿（区）离层水害特征分析. 煤矿安全. 2023(05): 106-112 . 本站查看
5. 赵春虎，王世东，姬中奎，朱开鹏，杨建，许峰，蔚波. 蒙陕矿区深部煤层开采顶板含水层失水特征与钻孔注水帷幕保护分析. 煤田地质与勘探. 2023(05): 88-98 . 百度学术
6. 王瑞，夏向学，闫国成，杨博，徐斌，唐忠义，黄文先. 巨厚砂岩含水层下煤层群开采顶板突水机理研究. 华北科技学院学报. 2022(05): 14-19 . 百度学术
7. 周全超，顾雷雨，殷裁云，李继升，王玺. 基于AHP-CRITIC-TOPSIS法的含水层富水性评价模型. 人民黄河. 2022(S2): 116-118+128 . 百度学术
8. 许国胜，罗秀坤，苏德国，李回贵. 黔北煤田厚灰岩下顶板离层水涌突致灾机制研究. 煤炭技术. 2021(10): 80-83 . 百度学术
其他类型引用(3)
计量
- 文章访问数: 73
- HTML全文浏览量: 0
- PDF下载量: 0
- 被引次数: 11
下载:
